we'll return, though, to "good morning america," on the west coast. and for a look at the nation's weather. here's sam champion. >>> good morning, how are you? nice to see you. >> good morning, you guys. where are you all from? >> south carolina. >> you got to get on tv this morning. >> all right, let's get to the boards. here's a couple of things that we want to share with you. a big pattern change coming into the country this weekend. we'll try to get some cold air mixed in them with as well. so, we'll be looking for that. that starts this weekend into next week. now, the weekend has gotten an awful lot of warm air w that, we'll see this falling in the form of storms. strong storms are possible on that line. but next week, we'll start to get some cold air blending in. quick look at >>> that's not enough gma. here's what eye aes head "dancing with the stars" brooke burke-charvet. the latest on her medical battle. >>> and unprecedented "good morning america" live event. this soldier dad is about to get the surprise of his life when we reunite him with